package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.MyException;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {
    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;

    @Override
    public R remove(Long id) {
        LambdaQueryWrapper<Dish> qw = new LambdaQueryWrapper<>();
        qw.eq(Dish::getCategoryId,id);
        int count = dishService.count(qw);
        if (count>0) {
//            throw new MyException("当前分类下关联了菜品，不能删除");
            return R.error("当前分类下关联了菜品，不能删除");
        }
        LambdaQueryWrapper<Setmeal> qw2 = new LambdaQueryWrapper<>();
        qw2.eq(Setmeal::getCategoryId,id);
        int count2 = setmealService.count(qw2);
        if (count2>0) {
//            throw new MyException("当前分类下关联了套餐，不能删除");
            return R.error("当前分类下关联了套餐，不能删除");
        }
        removeById(id);
        return R.success("删除成功");
    }
}
